def coverage_summary(results):
    """
    Aggregate-only coverage summary.
    No tracking, no per-user analytics.
    """
    counts = {}
    for r in results:
        agency = r.get("agency", "Unknown")
        counts[agency] = counts.get(agency, 0) + 1

    return [
        {
            "Agency": agency,
            "Result Count": count
        }
        for agency, count in sorted(counts.items())
    ]